Commit 48cc8b8b authored by Alex Elder's avatar Alex Elder Committed by Greg Kroah-Hartman
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greybus: loopback: define loopback functions symbolically 



Add some symbols to indicate what kind of "function" the
loopback thread is supposed to be performing--the type of
traffic it generates over its connection.

Signed-off-by: default avatarAlex Elder <elder@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@google.com>
parent 91262c3a

drivers/staging/greybus/loopback.c

+11 −5
Original line number Diff line number Diff line
@@ -55,6 +55,12 @@ struct gb_loopback { 
#define	GB_LOOPBACK_TYPE_PING				0x02

#define	GB_LOOPBACK_TYPE_TRANSFER			0x03



/* Current function (type of traffic generated by the loopback thread) */

#define GB_LOOPBACK_FN_NONE				0x00

#define GB_LOOPBACK_FN_PING				0x01

#define GB_LOOPBACK_FN_XFER				0x02

#define GB_LOOPBACK_FN_COUNT				0x03



#define GB_LOOPBACK_MS_WAIT_MAX				1000

#define GB_LOOPBACK_SIZE_MAX				SZ_4K
@@ -124,8 +130,8 @@ static void gb_loopback_check_attr(struct gb_loopback *gb) 
{

	if (gb->ms_wait > GB_LOOPBACK_MS_WAIT_MAX)

		gb->ms_wait = GB_LOOPBACK_MS_WAIT_MAX;

	if (gb->type > 2)

		gb->type = 0;

	if (gb->type >= GB_LOOPBACK_FN_COUNT)

		gb->type = GB_LOOPBACK_FN_NONE;

	if (gb->size > GB_LOOPBACK_SIZE_MAX)

		gb->size = GB_LOOPBACK_SIZE_MAX;

	gb->error = 0;
@@ -310,13 +316,13 @@ static int gb_loopback_fn(void *data) 
	struct gb_loopback *gb = (struct gb_loopback *)data;



	while (!kthread_should_stop()) {

		if (gb->type == 0) {

		if (gb->type == GB_LOOPBACK_FN_NONE) {

			msleep(1000);

			continue;

		}

		if (gb->type == 1)

		if (gb->type == GB_LOOPBACK_FN_PING)

			error = gb_loopback_ping(gb, &tlat);

		if (gb->type == 2)

		else if (gb->type == GB_LOOPBACK_FN_XFER)

			error = gb_loopback_transfer(gb, &tlat, gb->size);

		if (error)

			gb->error++;